Harrow-tooth fastening.



No. 7761394. d PATENTBD Nov. 29, 1904.

L. L. HAWORTH. HARROW TooTH FASTBNING.

APPLICATION FILED 1,110.30, 1903. N0 MODEL.

@y -m y/M gn-@04% Mwlm liarrn` Sralns Patented November 29, 1904.

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HARnow-TOOTH FASTENING.

SPECIFICATION forming part of Letters PatentrNo. 776,394, dated November29, 1904.

Application filed December 30, 1903. Serial No. 187,124. (No model.)

To all whom it may concern,.-

Beit known th at I, LYsANDER L. HAwoRTH, a citizen of the United States,residing at Decatur, in the county of Macon and State of Illinois, haveinvented certain new and useful Improvements in Harrow-Tooth Fastenings,of which the following is a specification, reference being had thereinto the accompanying drawings.

This invention relates to an improvement in harrow-teeth and thefastening means therefor; and the object of my invention is to form animproved harrow-tooth of the spike type which can be quickly secured toor removed from the tooth-bar.

A further objectof my invention is to provide an improved constructionwhereby two of the teeth may be secured to the tooth-bar by means of asingle fastening means.

A further object is to provide a spike harrow-tooth which isdouble-pointed, so that when one point becomes worn the tooth may bequickly reversed and the other point brought into position for use.

In the drawings, wherein a preferable embodiment of my invention isshown, and wherein like letters of reference refer to similar parts inthe several views, Figure l is a front elevation of the harrow tooth-barwith one of the teeth secured thereto. Fig. 2 is-a front elevation ofthe harrow tooth-bar with two teeth secured thereto by a singlefastening means. Fig. 3 is a perspective view of the tooth-bar.

Referring now more particularly to the drawings, D is a tooth-bar formedof channeliron. B represents theteeth, which are formed by bending astraight bar at its center at right angles to form the arms b', whichare sharpened at their extremities to form the points b2 3. 'Ihetooth-bar D has in its lower flange Z a plurality of apertures E, whichare slightly larger in diameter than the diameter of the teeth B, and inits upper flange d a plurality of slots F, which are of the same widthas the diameter of the apertures E and which extend rearwardly from thefront vedge of the flange d" to a point directly over the apertures E inthe lower flange (l of the tooth-bar.y

rIhe tooth-bar D is also provided in its upper and lower flanges CZ andd, adjacent each of the apertures E and slots F, with registeringapertures H and l, which are adapted to receive a Cotter-pin orlocking-bolt J. The distance of the apertures H and I from the aperturesE should be slightly less than the length of the arm of the tooth B fora purpose to be hereinafter set forth.

The manner of inserting the tooth is as follows: rIhe arm 7/ is passedpoint first through the slot F and apertures E in the tooth-bar, theslot F permitting' the arm L of the tooth to pass the upper flange d andrest on the lower flange CZ of the tooth-bar D. The tooth is then turnedto cause the arm o to swing toward the apertures H and I and toliebetween the upper and lower flanges d and Z of the tooth-bar D. Thelocking-bolt J is then secured in the apertures H and I, and as thedistance from the apertures H and I to the apertures E is slightly lessthan the length of the arm Z) the bolt J will overlie the end of the armb of tooth B and confine the same within the body of the tooth-bar D.

When I desire to secure two teeth with a single fastening means, I formthe tooth-bar D with the apertures E and slots F at a distance apartslightly less than twice the length of the arm of the tooth B and withthe registering apertures I-I and I intermediate the apertures E E.I/Vith this construction it will be seen that when teeth are placed intwo Vof the adjacent apertures and swing toward each other the ends ofthe arms b of such teeth will overlap when said arms are confined in thetooth-bar D and that a single fasteningbolt will hold both of the teethin position.

' I/Vhile I have shown the arms and of equal length and both pointed, sothat the tooth might be reversed when one of the Ypoints became worn orpointed, I do not desire to limit myself to this. precise construction,as it is obvious that the arm of the tooth might be made any length, solong as the holes H and I were so positioned that the bolt J whensecured therein would overlie-the arm b when in its position between theflanges Z and cl' of the tooth-bar.

Having thus described the invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. In a harrow, a channeled tooth-bar, provided with an aperturetherein, a tooth journaled in said aperture and having alaterallyprojecting portion arranged to lie within the channel of thetooth-bar, and means for securing said projecting portion within saidchannel.

2. In a harrow, a channeled tooth-bar, provided with an aperturetherein, a tooth journaled in said aperture and having alaterallyprojecting portion arranged to lie within the channel of thetooth-bar, and a locking-bolt for securing said projecting portionwithin said channel.

3. In a harrow, a channeled tooth-bar provided with an aperture in oneof its ianges, a tooth journaled loosely in said aperture and having itsupper end bent to form a laterallyprojecting portion arranged to liebetween the flanges of the channeled tooth-bar when the tooth is turnedin the aperture, and means for locking said projecting portion betweensaid iianges.

4. In a harrow, a channeled tooth-bar provided with an aperture in oneof its flanges, a tooth journaled loosely in said aperture and havingits upper end bent to form a laterallyprojecting portion arranged to liebetween the langes of the channeled tooth-bar when the tooth is turnedin the aperture, and a lockingbolt passing through both iianges in thetoothbar and arranged to overlie the projecting portion of the tooth andhold the same coniined between the flanges of the tooth-bar.

5. In aharrow,achanneltooth-bar provided with an aperture therein, atooth journaled in said aperture and having a laterally-projectingportion arranged to lie within the channel of the tooth-bar when thetooth is turned in the aperture, to prevent longitudinal movement of thetooth through said aperture.

6. In a harrow, a channel tooth-bar provided with an aperture in itslower side and an openended slot in its Lipper side, said slot directlyoverlying said aperture, a tooth journaled in the aperture in the lowerside and provided with a laterally-disposed portion, saidlaterally-disposed portion being arranged to pass through the slot inthe upper side of the channel-bar when the tooth is inserted in theVapei-, ture in the lower side and to lie within the upper and lowersides of the channel-bar when the tooth is turned in said aperture, andmeans for locking said projecting portion within the upper and lowerside of the channel-bar.

7. In a harrow, a channel tooth-bar provided with an aperture in itslower side and an openended slot in its upper side, said slot directlyoverlying said aperture, a tooth journaled in the aperture in the lowerside and provided with a laterally-ilisposed portion, saidlaterally-disposed portion being arranged to pass through the slot inthe upper side of the channel-bar when the tooth is inserted in theaperture in the lower side and to lie within the upper and lower side ofthe channel-bar when the tooth is turned in said aperture, and alocking-bolt passing through both sides of the channel tooth-bar andarranged to overlie the projecting portion of the tooth-bar.

8. In a harrow, a tooth-bar provided with a pair of apertures, a pairoi' teeth journaled in said apertures, each of said teeth having alaterally projecting portion, and a single means for securing thelaterally-projecting portions to the tooth-bar.

9. In a harrow, a channeled tooth-bar provided with a pair of apertureson one of its sides, a pair oi' teeth journaled in said apertures, eachof said teethbeing provided with a laterally-projecting portion, saidlaterallyprojecting portions being arranged to lie within the channel ofthe tooth-bar with their ends overlapping when the teeth are turned inthe apertures, and a single means for locking the projecting portionswithin the channel of the tooth-bar.

10. In a harrow, a channeled tooth-bar provided with a pair of apertureson one of its sides, a pair of teeth journaled in said apertures, eachof said teeth being provided with a laterally-projecting portion, saidlaterallyprojecting portion being arranged to lie within the channel ofthe tooth-bar with their ends overlapping when the teeth are turned inthe apertures, and a locking-bolt passing through the sides of thechanneled tooth-bar and arranged to overlie the overlapping ends of theprojecting portions of the teeth.

In testimony whereof I affix my signature in presenceof two witnesses.

LYSANDER L. HAVVOR'IH.

Witnesses:

J. M. PERKINS, F. R. GooDE.

IOO

